BibTeX-Ruby is the Rubyist's swiss-army-knife for all things BibTeX. It
includes a parser for all common BibTeX objects (@string, @preamble,
@comment and regular entries) and a sophisticated name parser that
tokenizes correctly formatted names; BibTeX-Ruby recognizes BibTeX string
replacements, joins values containing multiple strings or variables,
supports cross-references, and decodes common LaTeX formatting
instructions to unicode; if you are in a hurry, it also allows for easy
export/conversion to formats such as YAML, JSON, CSL, and XML (BibTeXML).